The Dam Testing Annex Key in ARC Raiders is a rare find that opens a hidden room in the Dam Battlegrounds. Accessing this room guarantees loot safe from other players, but the key spawns randomly, so finding it is all about luck. Once you have it, head to the Testing Annex and unlock the treasures inside.
How to Find the Key & Get to the Testing Annex
The key doesn’t have a fixed spawn point but you’ll most likely come across it in the Research & Administration building. You can stumble across it while looting almost any container, and it might even appear outside the Dam map, though it’s mainly linked to that battleground. Essentially, finding it is all about luck.
Once you have the key, head to the southeastern corner of the Dam map — that’s where the Testing Annex sits. Enter through the main door and keep moving straight. Eventually, you’ll reach a large steel door with a panel next to it.
Using the Key
Interact with the panel using your key to unlock the door. Keep in mind that the key is consumed when used, so if you want to access this room again in future matches, you’ll need to find another one.
That’s everything you need to know. Grab the key, reach the room, and claim the loot before anyone else gets there. With a bit of luck, you could score something really worthwhile.
